DE50110632D1 - Axial thrust - Google Patents

Axial thrust

Info

Publication number
DE50110632D1
DE50110632D1 DE50110632T DE50110632T DE50110632D1 DE 50110632 D1 DE50110632 D1 DE 50110632D1 DE 50110632 T DE50110632 T DE 50110632T DE 50110632 T DE50110632 T DE 50110632T DE 50110632 D1 DE50110632 D1 DE 50110632D1
Authority
DE
Germany
Prior art keywords
ring element
groove
front sides
balance piston
axial thrust
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE50110632T
Other languages
German (de)
Inventor
Stephan Bross
Ruediger Koepp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KSB AG
Original Assignee
KSB AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KSB AG filed Critical KSB AG
Priority to DE50110632T priority Critical patent/DE50110632D1/en
Application granted granted Critical
Publication of DE50110632D1 publication Critical patent/DE50110632D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/041—Axial thrust balancing
    • F04D29/0416—Axial thrust balancing balancing pistons

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sealing Devices (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Actuator (AREA)

Abstract

The invention relates to an axial thrust compensation device consisting of a balance piston rotating by means of a shaft, comprising a groove which is arranged on the outer circumference of the balance piston, and a ring element which is arranged in said groove. The ring element is arranged in a movable manner in the groove, having low end play during the formation of a gap between the axial front sides thereof and the lateral defining walls lying opposite said front sides. The balance piston is guided in an opening pertaining to a housing. The aim of the invention is to improve the efficiency of the axial thrust compensation device and to reduce leakage. In order to achieve this, the ring element (7) is split by a gap (9), and a pressure difference between the axial front sides of the ring element (7) expands the ring element (7) in a flexible manner and positions it in a sealed manner on the inner wall of the opening.
DE50110632T 2000-08-03 2001-06-22 Axial thrust Expired - Lifetime DE50110632D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE50110632T DE50110632D1 (en) 2000-08-03 2001-06-22 Axial thrust

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10038586A DE10038586A1 (en) 2000-08-03 2000-08-03 Axial thrust
DE50110632T DE50110632D1 (en) 2000-08-03 2001-06-22 Axial thrust
PCT/EP2001/007052 WO2002012728A1 (en) 2000-08-03 2001-06-22 Axial thrust compensation device

Publications (1)

Publication Number Publication Date
DE50110632D1 true DE50110632D1 (en) 2006-09-14

Family

ID=7651662

Family Applications (2)

Application Number Title Priority Date Filing Date
DE10038586A Withdrawn DE10038586A1 (en) 2000-08-03 2000-08-03 Axial thrust
DE50110632T Expired - Lifetime DE50110632D1 (en) 2000-08-03 2001-06-22 Axial thrust

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE10038586A Withdrawn DE10038586A1 (en) 2000-08-03 2000-08-03 Axial thrust

Country Status (4)

Country Link
EP (1) EP1305525B1 (en)
AT (1) ATE335134T1 (en)
DE (2) DE10038586A1 (en)
WO (1) WO2002012728A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20115516U1 (en) * 2001-09-20 2001-11-29 Grundfos A/S, Bjerringbro Centrifugal pump
DE10248162A1 (en) 2002-10-16 2004-04-29 Ksb Aktiengesellschaft Element defining a gap to be placed on a shaft
JP4352903B2 (en) 2004-01-15 2009-10-28 株式会社日立プラントテクノロジー Single-shaft multistage pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2221225A (en) * 1938-04-16 1940-11-12 Pacific Pump Works Balancing and leakage device for centrifugal pumps
US2329990A (en) * 1942-02-12 1943-09-21 Ingersoll Rand Co Sealing device
US3033623A (en) * 1958-09-02 1962-05-08 John B Thomson Fluorocarbon sleeve bearing
US3157444A (en) * 1962-10-12 1964-11-17 Rockwell Standard Co Slotted bearing sleeve with lubricant retaining means
EP0078345A1 (en) * 1981-10-31 1983-05-11 Bran & Lübbe GmbH Centrifugal pump with axial thrust compensation driven by an air-gap sleeve motor
FI940630A (en) * 1994-02-11 1995-08-12 Ahlstroem Oy centrifugal
DE29500744U1 (en) * 1995-01-18 1996-05-15 Sihi Ind Consult Gmbh Fluid machine with relief piston

Also Published As

Publication number Publication date
DE10038586A1 (en) 2002-02-14
EP1305525A1 (en) 2003-05-02
ATE335134T1 (en) 2006-08-15
EP1305525B1 (en) 2006-08-02
WO2002012728A1 (en) 2002-02-14

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition